Should I take vitamin D3 or D2 for calcium supplementation?
Disease description:
The doctor said calcium supplementation is okay. Which is better for calcium absorption, vitamin D3 or D2? Should I take vitamin D3 or D2 when supplementing calcium?
Doctor's answer (1)
Dr. Yang Ziqi
Calcium supplementation is more effective when combined with vitamin D3. If calcium supplementation is needed, patients are advised to take vitamin D3 orally. Vitamin D3 has higher biological activity than vitamin D2, making it generally more effective for calcium absorption. The primary function of vitamin D3 is to promote the absorption of calcium and phosphorus in the body, thereby increasing calcium and phosphorus levels in the bloodstream, supporting bone growth, development, and mineralization. It also enhances immune function, improves blood circulation, and helps prevent various diseases such as osteoporosis, rickets, and cardiovascular conditions.
In addition, exposure to sunlight can also help increase vitamin D3 levels, as ultraviolet rays stimulate the conversion of 7-dehydrocholesterol in the skin into vitamin D3.
